A Reno federal judge is postponing a decision on whether to block U.S. regulations protecting the greater sage grouse. Judge Miranda Du says she’s not clear if the rules are really to blame for delays in construction of a rural water supply tank near Great Basin National Park along the Utah line. She granted an extension so lawyers can give more detailed arguments than they made at a two-day hearing in Reno last week. That means Du won’t rule before Christmas on the request for a temporary injunction freezing the regulations.